McKenzie Douthit is about to be a teen mom all over again! The Teen Mom 3 star, now 18, confirmed that she has married her fiance, Josh McKee, and the couple are expecting their second child together. Douthit, who also appeared with McKee on the fourth season of 16 and Pregnant, confirmed the news in a Facebook post. Teen Mom 3 will make its series premiere on Aug. 26 on MTV.

Douthit announced her pregnancy and marriage news in a Facebook post on Monday, writing: "And yes. For everyone wondering, I'm 12 weeks pregnant… time to tell the truth." She also addressed those against her decision to get pregnant a second time by writing: “Been married for months but I’m not allowed to get pregs with my husband. Im married yall [sic] and happier than all of you. God knows what he is doing… get a life…."

SEE ALSO: Farrah Abraham Kicked Out Of Rehab!Her first child, a son named Ganon, will celebrate his second birthday this fall. Douthit and McKee got engaged for a second time last January after calling off their initial wedding plans in October 2012. Despite her professed happiness, however, it appears that Douthit is also experiencing stress over the pregnancy. Douthit also wrote on Facebook that day: “I'm probably the easiest target of all Miami [Okla.] to judge. I only told cause people are asking why I'm fat lol....So I'm not texting anyone back right now I need some time to myself. So sorry if ur [sic] mad cause I'm not texting back. Or mad cause you didn't know about this."

Douthit has previously said kind things about her husband, McKee, on Facebook. Earlier this year, Douthit wrote: “I am engaged to the most wonderful guy in the world. He treats me wonderful and we have a beautiful son named Gannon. They both are my everything.”

Douthit and McKee will not appear on the upcoming fifth season of 16 and Pregnant, which is currently in the casting process. Despite being one of the most popular shows on MTV, it has received scathing reviews from critics. The New York Times called the show a "documentary-style series about real-life Junos who are not scoring in the 99th percentile on the verbal portion of their SATs."